Triangular muffler



FIG. 1 is an isometric view of the triangular muffler of the present invention;

FIG. 2 is a front elevation view of the triangular muffler of FIG. 1;

FIG. 3 is a right elevation view of the triangular muffler of FIG. 1 which is identical to the left elevation view;

FIG. 4 is a rear elevation view of the triangular muffler of FIG. 1;

FIG. 5 is a top plan view of the triangular muffler of FIG. 1;

FIG. 6 is a bottom plan view of the triangular muffler of FIG. 1; and,

FIGS. 7-12 are additional perspective views of the triangular muffler of FIG. 1 with alternative environmental structure shown in broken lines.

Any broken line illustration is for illustrative purposes and forms no part of the claimed design. 

The ornamental design for a triangular muffler, as shown and described. 